
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| General Information |
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| Table 11 | Sensor Parameter Descriptions — continued | ||
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| Parameter | Applicable to Sensors | Description | |
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| High Alarm | • Blue, Red and White | The High Alarm Limit sets the value that trips the high alarm when | |
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| temperature sensors | exceeded. |
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| • Wireless humidity |
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| sensor |
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| • Wireless |
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| temperature sensor |
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| Alarm Delay | All | This sets the time period that an alarm condition can exist before the | |
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| alarm is triggered. This is useful for helping to prevent false alarms from |
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| occurring in situations where normal activities cause conditions to tem- |
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| porarily exceed alarm thresholds. For example, the temperature in a |
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| freezer may temporarily rise above the High alarm limit while frozen food |
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| is being restocked and the freezer door is open, but the delay prevents |
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| the alarm from going off unless the temperature fails to cool below the |
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| alarm threshold within the alarm delay period. |
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Relay Operation
This section describes the operation of the base unit's relays. The relays must be programmed correctly so that their outputs provide the desired signaling to the alarm panel.
Table 12 Relay Configuration Settings
Relay Setting | Description |
No Alarm | No Alarm: Power is removed from the relay coil as shown below. | ||||
Relay State: |
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| NC | ||
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| alarm | ||
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| C | panel | ||
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| NO | |
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Idc = 0
From
EA800
logic
Alarm: Power is applied to the relay coil as shown below.
NC | To | |
alarm | ||
C | ||
panel | ||
NO | ||
Idc |
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From |
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EA800 |
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logic |
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No Alarm | No Alarm: Power is applied to the relay coil as shown below. | |||||||||||||||
Relay State: Energized |
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| To |
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| NC |
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| alarm | |
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| C |
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| NO |
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| From | Idc |
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| EA800 |
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| logic |
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| Alarm: Power is removed from the relay coil as shown below. This provides for a | |||||||||||||||
| default alarm if the EA800 loses power in addition to the sensors' alarms. | |||||||||||||||
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| To |
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| NC |
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| C |
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| alarm | ||||||
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| NO |
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| Idc = 0 |
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| EA800 |
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| logic |
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Active Condition: | Sets the alarm to be active when an alarm condition exists. | |||||||||||||||
Alarm Only |
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Active Condition: | Sets the alarm to be active when an alarm condition exists or a warning is active. | |||||||||||||||
Alarm or Warning (default) |
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15 |